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Kamila [148]
4 years ago
14

What will be the perimeter and the area of the rectangle below if it is enlarged using a scale factor of 2.5?

Mathematics
1 answer:
Nat2105 [25]4 years ago
6 0
Perimeter = 70 cm, Area = 300 cm2
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How do you solve this?
Naddika [18.5K]
\dfrac{3+4i}{2+i}=\dfrac{(3+4i)(2-i)}{(2+i)(2-i)^{(*)}}=\dfrac{3\cdot2-3\cdot i+4i\cdot2-4i\cdot i}{2^2-i^2^{(**)}}\\\\=\dfrac{6-3i+8i+4}{4-(-1)}}=\dfrac{10+5i}{4+1}=\dfrac{10+5i}{5}=\dfrac{10}{5}+\dfrac{5i}{5}=\boxed{2+i}\to \boxed{a=2}\\\\used:\\(*)\ (a+b)(a-b)=a^2-b^2\\(**)\ i^2=-1
5 0
4 years ago
2. Write the equation of a circle that has a diameter of 12 units if its center is at (4,7).
ahrayia [7]

Answer:

The Answer is B

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here diameter = 12, thus radius = 12 ÷ 2 = 6 and (h, k) = (2.5, - 3.5), thus

(x - 2.5)² + (y - (- 3.5))² = 6², that is

(x - 2.5)² + (y + 3.5)² = 36 ← equation of circle

5 0
3 years ago
Pairs of jeans?
dangina [55]

Answer:

$534

Step-by-step explanation:

89*2=178

178+89(4)=534

3 0
3 years ago
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У = 3х +8<br> What is the x-intercept?
m_a_m_a [10]

Answer:

-8/3

Step-by-step explanation:

To solve for x-intercept, we set y as 0.

0 = 3x + 8

-8 = 3x

-8/3 = x

The x-intercept of the line is -8/3.

6 0
3 years ago
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$82.80
I hope this helped!
4 0
4 years ago
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